CCM Carbon Fiber Barrel Kit

[Moodog]

It's two barrels, ten barrel backs/sizers, an extra tip and threaded bit, and the carrying case. Any idea what it is all worth?

[Lt. head-shot]

Dang I was desperately searching for these for a build a few months ago. There have been a few up for sale, I think the last kit I saw with this much in it went for $200+. Certainly out of my price range unless you'd be willing to split it in half. GLWS!

[MrBarraclough]

Weirdly enough, I think I have one of those backs/sizers. I bought a LAPCO AC-threaded bore sizer off of eBay a couple of months ago and it arrived with another sizer screwed into it. Not sure the seller even realized they were two separate pieces. I messaged them and said thanks for the bonus sizer/adapter/whatever and never got a response. Anyway, I've been trying to figure out what it is, since the female threads are definitely not AC. Grabbed my calipers and a quick measurement seemed to put them in the ballpark of 21-22mm, so I figured it was probably a Spyder to AC adapter. Until I saw this post. Those backs are precisely what I have, including the holes and the flats on the throats.

Could someone kindly tell me what the female threads on these backs are? And is there anything they fit other than some weird CCM carbon fiber barrel front that probably hasn't been made in years?

[Chuck E Ducky]

Those backs fit standard CCM barrels as well. Not just the CF barrels.

[MrBarraclough]

Thanks for the info, Chuck E Ducky.

I wonder why CCM created their own barrel threading in the first place. One thing the world does not need is yet another barrel thread pattern.

[Chuck E Ducky]

So they originally started with a fixed bore then went to a two piece with sizer backs but offered these CF tips at one point. But thoes barrel backs will fit most all tips there are two different OD aluminum barrel tips I believe.